The former Florida governor makes his first major public address Wednesday since announcing in December he was actively exploring a presidential bid, though he hasn't officially announced a campaign. He's set to pitch a message at the Detroit Economic Club that he's a "reform conservative" and will offer an optimistic view for how to help the middle class.

His absence seemed to be welcomed by many activists at the event. He was a frequent punching bag for some of the speakers — Donald Trump said to big applause: "The last thing we need is another Bush" — and the former governor's push for Common Core education standards was an even bigger target that day. New Hampshire State Rep. Bill O'Brien blasted the idea of "nominating a liberal supporter of Common Core because he has a familiar name."

The Hawkeye State is already seeing a range of potential candidates making stops in the state. Sen. Rand Paul will be there on Friday and Saturday for an "Audit the Fed" rally and to attend an Iowa State University basketball game.

New Jersey Gov. Chris Christie speaks at a Dallas County GOP event in Iowa on Monday.